Rotary steam-engine



(No Model.)

S. B. PATTESON.

ROTARY STEAM ENGINE.- No; 453,065. Patented May 26, 1891.

"m2 uonms PETERS co.. nHoro-Lrmu, WASHINGTON: n. c.

UNITED STATES PATENT OFFICE.

SAMUEL B. PATTESON, OF ST. JOSEPH, LOUISIANA.

ROTARY STEAM-ENGINE.

SPECIFICATION forming part of Letters Patent No. 453,065, dated May 26,1891. Application filed February 5 1891. Serial No. 380,284. (No model.)

.To all whom it may concern;

Be it known that I, SAMUEL B. PATTESON, a citizen of the United States,residing at St. Joseph, in the parish of Tensas and State of Louisiana,haveinvented certain new and useful Improvements in RotarySteam-Engines; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to improvements in rotary steam-engines, whichwill be hereinafter more particularly described and pointed out.

In the accom panyingdrawings,forming part of this specification, Figure1 is a side elevation, partly in section. Fig. 2 is a transversevertical section.

A is the main shaft, on which is properly secured the wheel B.

The periphery of B is covered bya rectangular cap 0, Which is supportedin any suitable frame D D. The cap is made steamtight for aboutone-fourth of the circumfer ence from c at the top to c on the right ofFig. 1. This may be accomplished by various methods; but I use steelpacking-rings d cl, as shown in Fig. 2. The periphery Z) of the wheel Bis wide enough to have two series of heads 13 B arranged alternatelythereon, as shown in Fig. 1, so that when the steam is not acting ononethe other will be acted upon. On top of the cap 0 is the steam-chestD, which is divided by a partition (Z. d d are the inlet-ports, and dthe slide-valve.

E is a sliding head to each division of the steam-chest D, which movesvertically by the heads 13 as they pass under them. To, the slidingheads E are attached the crank-levers F, to which are pivoted thevalve-rods f and valves d". The heads have a cam shape, extending fromthe outside at B to the circumference of the wheel-rim at t' and from Bto the rim 2'. The purpose of this cam-surface is to gradually raise thesliding head E until the head has finally passed from under it. Thecam-surface is so arranged in each engine, when constructed, that thesliding head E will be raised at the proper time to out off the steam,according to the travel of each head, in connection with the lead of thevalve in the steam chest. lVhenever the heads 13 pass under the slidingheads E, which have been elevated, the crank-leversF move the slidingvalve-rods fand close the ports d and shut off the steam from thechamher 0 of the cap 0. On the side of the sliding heads E areprojecting plates 9, the object of which is to cover the under side ofthe ports (2, so that as soon as a head 18 has passed from under thisplate 9 the steam from the port will immediately force the head down toits normal position. At h is the exhaustpipe for the out-let of thesteam from the chamber 0. From 2' around three-quarters of the cap 0around to the top at c the sides of the cap 0 do not touch the wheel Bto avoid friction.

The can1-surfaces of the heads B and B" are narrower than the heads anddo not touch the sides of the cap O.

The shaft A can be supported in any suitable frame H, as shown in Fig.2, and the driving wheels or gears G can be secured.

I claim- In a rotary steam-engine, the sliding heads E, provided withthe projecting plates g, in combination with the crank-levers F, slidingvalve-rods f, valves c of the steam-chest D, and the wheel 13, havingseries of cam-surfaced heads B B alternately arranged on the peripheryof steam-chest 0, all substantially as and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

S. B. PATTESON.

Witnesses:

THos. H. YOUNG, Tnos. H. SMITH.

